Physics - Wave Optics Question with Solution | TestHub

In$\mathrm{YDSE}$, the slits have different widths. As a result, the amplitude of waves from two slits is$A$and$2A$respectively. If${\mathrm{I}}_0$be the maximum intensity of the interference pattern then the intensity of the pattern at a point where the phase difference between waves is$\mathrm{\varphi }$is given by$\frac{{\mathrm{I}}_0}{\mathrm{P}}\left(5+4\cos \mathrm{\varphi }\right)$. Where P is in  integer. Find the value of P?